Kenji was born as the second son of three brothers. From her mother, Reiko, I had the impression that she was quiet and withdrawn. In the spring of one year, my older brother got a job and lived alone, and my younger brother enrolled in a boarding school. His father was assigned to work alone, and his life changed in a hurry, and Kenji and Reiko began to live together. The bustling house has become quiet, and Reiko feels a sense of loss. Kenji feels the frustration and emptiness of worrying only about his brothers, and tries to feel his mother's love for him.